I1/5-3xI+73/5=I1/5-3xI+38/5
Если x=4/5,то I1/5-3*4/5I+28/5=I1/5-12/5I+38/5=I-11/5I+38/5=11/5+38/5=49/5
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I1/5-3xI+73/5=I1/5-3xI+38/5
Если x=4/5,то I1/5-3*4/5I+28/5=I1/5-12/5I+38/5=I-11/5I+38/5=11/5+38/5=49/5